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1%. 752 308. i?ifii lq"man FEB. 1 may ,A. STUUKI. RAILWAY TRUCK.

APPLICATION FILED AUG. m 1903.

N0 MODEL Toa Zl wito rit'it mttycoztcerni 1 v Be it known that]; AnNoLD STUGKL- a resi- My invention relates torailtvay-tnicks; and: its object is to provide a truck for carrying: "I 'Very heavy loadsgand especiallyfor use with car-bodies which must be carried quite low;

' truck having trussedside frames; so as to d9?- crease thehe'ight of thef-rarne above; the jour-l nal-boxes, andalso consists in a trnssed bridge connecting the two bolsters of the six wheeled truck, so arranged asto preventbreakage at. the neck of the bridge and .also. so that the i i L; \LARNOLDF mm, OFZALLEGHENY; jmammal,assmmaosnm Patented February 16, 1904.

1 "ARD" STEELICAR COMPANY, or PITTSBURG; PENNSY VANIA, A no v RATION OF PENNSYL A A;

ant war-TRUC 1 y grjaammoinamag part'of Letters Patent N5. 75 2, 8 dated Feta-nary 16, 19454.-

3 .ip netamt taat ua1531903. semina ids svwermoaaaf"'= dent of Allegheny, in the county of Allegheny and State of Pennsylvania, haveinvented a new i and juse'ful I.mprgwement in RailwayTrncks;

and I'd'o herebydeclare the fiollowing to bee, full, clear, and exact description thereof. 7

The inyentionconsists. of a sixewheeled .center.plate can be carried low down.

In pan r w ne F al i i aside View ofmy i-rnproyed truck. Fig. 215 a fcentrallongitudinal section through the same. I Fig. '3 is a plan view,partlyi n section, of one half thereof; and-Fig. .4, ,onthe left siide, is a 1 on" the right; sideasimilarsseotionon the-line ,4 4-, Fig.5. i Y

transverse sectionjon-theiline 4; e, Fig. 3, and

i My'trn'ck is especially designed for carshaving -a high carrying capacityand wherein the floor must be k'ept reasonably low in order to facilitate the loading and unloading of heavy articles, such as" castings, machines, and Ethel like'. For this-purpose the .trn'ckfmust be made Very-.'conipact. inordel to get; it in the, v

' .-'-'-very high 'carryi-ngcapacity, In order to keep the pressure of the Wheels on the rails within limited space available and must also have a a'reasonable -limit, tl1e- .truck is of the six;-

"- Wheeled typegas illustratecllalthongh the in "vention is. not, -entirelydiniited thereto, as it,

y ppl e o s ri t. 'r nla'. ei t, 1 I or'evenmore Wheels,"- j 'l I Allsiw-Wheeled rncksheretofore construct-1 edalravehad-ayban pr wheelrpiece lying aboy'e' r the onrnabbcxesand connecting, the several pedestals. Thisbaror wheelpiece heretofore has'l'earried the? l ad anddist ibxitedthesarne I had to he needs very stiif, strong; andheavyi At the bottom of the jonrnal-boxespedestal 5v tie-straps wereused to keep the pedestals in place without, however, performing any other function. The wheel-pieces being soheavy necessarily projected a considerable distance (above the tops of the jolirnal-boies. 7" With cars having a low floor, such as-my" truck is designed for, there is no roomfortsnch large or deep tyheelrpieces; bu'tlstillit is absolutely necessary thattheframe lie-practically rigid, else the center j onrnal will carrymore' of the load than the two ontsid journals. {in order to get the necessarystifiness'"the sideffframes and withouthaving an nnneces'saryquantity of metal or material above the gjonrnahboxes,

I form'each side frame as a trussedgirder hav ing top, 'bottorn, and diagonal Ineifnbers, the bottom member'also acting as ap'edestal tie- ,strap. I 2 In the accompanying drawings the :wheelsare shown at 1, journal-boxes at 2, and the 7 pedestals at '3, These may be of the-usual or any preferred constructiona Theside frames are each composed of atop'orcompression member 5,'a bottom or tension member 6, and "the diagonal member 7. The l-a'tterf. is con 15 nected tothe top rnember 5 attheends and also at the middle portion .;8. 1 Intermediate its ends and middle portion the diagonal rnernher 7 isbent downwardly, so asto-separate it frornthe' top member, and thedcpressed por 30 'tions' are secured to the tension member 6, either directly, b'ut.preferably-.by the interposition of the spacingi plates'tl. Between the topm'ernber 5 and the depressed portions ,of the diagonalfmember =7w-are 1placdthe bol 5 ster 'guides'or columns 10, {which may beof the denial or any preferred construction, but V'Which in the drawings are showmas plates bent ifitoU shaperas show-n; havingithe hori- "zontal fiat portion 11 'i'esting on and secured 9 to t'he diagonal member 7 and having its upiper ends'fl'anged outwardly, as at 12, for riveting to theater) member The vertical. portions of these plates'are stiffened up by. being afllgr- To the vertical portions are riveted made ofa U shape incross-section, as shown nal member and the bar 6 the bottom or ten-' the bolster-guides 14, and over the horizontal portion is secured the spring-seat -15.

The side frame described is practically a rigid truss, the bar 5 being the top or compression member,-'while the bar 7 is the diagothe lower ends of the pedestal in the ordinary way.

nected by any suitable cross-members. I

' have shown for this purpose angle-bars 17,

riveted to the oolumns-10,-and'diagonal mem-' ber", 7 With this form of truck there necessarily are two bolsters or transoms,the drawings showing the bolsters 18,

, composed of two parallel channel members 19 These bolsters are 3 and top andbottom cover-plates 2 O and 21.: depressed betweentheir ends, as shown in Fig. 4, so'as to carry the. center plate-supporting truss as low as posj Sible. Y

'1 pose.

. the brackets 26- the to overcome this weakness,

. The center bearing-plate in a six-wheel I truck. is usually supported by a bridge connecting the two bolsters. Ordinarily only a top and diagonal bar are used for this pur- This necessarily requires the use. of very large bars in order to preven wherethe bridge meets thebolster. In order I form the bridge as a truss by connecting the bolsters by means of a bottom or tension bar secured to brackets,

fastened. to the bottomof the bolster, thus preventing the bolsters from rocking.

The bridge shown 1n the drawings consists of a pair of trusses 'each'having a top or compression bar 26 and-a diagonal'bar 25, both of said bars having their ends secured to the top of the bolsters and the top. barpreferably being bent slightly upwardly, while the bottom bar is depressed downwardly, as shown in'Fig. 1. Secured to the bottom cover-plate of the bolsters are brackets 26, which may be of, any suitable shape or material. These brackets on the two bolstersare connected by the bottom bar or'tension member 27,-which is secured at its middle to the depressed portion of the diagonal bar 25. Instead of using bolster itself might be of such brackets.

Between the top and diagonal bars '24 and 25 is placed a cross-bridge, consisting of two spacers 29, preferably formed of pressed plate, as shown, and serving to carry thecenand The side frames of i the truck may be conwhich may be of.- ;a'ny.preferred construction, but are shown as side frames, ported by said side frame and being depressed between their ends,-a bridge connecting .the depressed portions of said bolsters bending.

.ed by'said side frames, a

gitudinal members ter bearing-plate 30.. These spacing-pieces. form the strut between the top, diagonal, and

'bottom bars of the bridge, and in order that the center plate may be carried verylow said spacing-pieces are depressed between their ends, as clearlyshown in Fig. 4,.thus bringing .the top surface thereof considerably below the end portions.

The bridge described is-a truss, and. therefore the bending moment heretofore exerted at the neck ofthe bridge-that is, the point where the same meets the bolsters-As overcome, thereby overcoming the principal source of weakness in prior trucks of this kind. Secured to the ends of the bolsters 18 is a bridge-bar 32, shown as a pressed channel: bar bowed'upwardly and having a wear-pl'ate 33 secured to its central portion, as the truck side bearing. I I It will be observed that th'truck-frame reasonably low, thus permitting the floor of the car carried thereby to be placed very low.

Both the 'side frames and the bridge are trusses, which combine a maximum amount What I claimas my invention, and desire to secure by' Letters Patent, is- I c 1. In a car-truck, the combination with the side frames, of two bolsters or transoms sup.- ported. by said side frames and being depressed between their ends, ing the depressed portions of said'fbolsters,

and a center bearing-plate carried'by said '10 bridge. i I

2. In a car-truck, the combination with the of-t'wo bolsters or transoms supand comprising a truss having its top chord. substantially straight, and a center bearingplate carried by said bridge.

3. In a car-truck, the combination with side 1 transoms support- I bridge connecting frames, of two bolsters or said bolsters and comprising a pair of longitudinal members supportedon said bolsters, and a transverse member connecting said lon face depressed betw tion.

ported by said side frames, ing said bolsters and supported on said bolsters, bers connecting said trusses and having their upper surfaces depressed between' their ends, and a center bearing plate supported by said depressed portions. I 5. In a car-truck, the combinationw-ithsideframes, of twobol'ste'rs or transoms support. ed by's id side frames and being depressed? a bridge connectwhich acts I 85' U described is very strong and rigid and also 9 of strength withaminimum amount of metal.

a bridge connectand having itsupper sur- I een its ends, and a centerbearing-plate supported by said depressed por .4. In a carrtruck, thecombination with the side frames, of two bolsters or transoms sup- 1 comprising two trusses transverse membetween their ends, a bridge connecting the depressed portions of said bolsters and comp is ng two longithdinal members supported on said bolsters, and 'a transverse member connecl ad to said longitudinal members and be- ;ig depressed between its ends, and a center bearing-plate supported by said depressed ,por-

'tion.

.6. In a car-truck, the combination with side frames, of two bolsters or transoms supported by said side frames and being depressed between their ends, a bridge connecting the depressed portions of said bolsters and comprising a pair of trusses supported'on said bolsters, said trusses comprising tension, diagonal and compression members, struts for said trusses comprising a pair of spacing-pieces having their ends interposed between the tension and compression members, said spacingpieces connecting the two trusses and having their upper surfaces depressed between their ends, and a center bearing-plate supported by said depressedportions. I 7, In a car truck, the combination with the side frames, of two bolsters or transoms sup- :ported by said side frames, 2. bridge connecting said bolsters consisting of a top member, a bottom member, and diagonal members connecting said top and bottom members. v

8-. In a car-truck, the combination with the side frames, of two bolsters or transoms supported by said side frames, a bridge connecting said bolsters and comprising a top or compression member, a bottom or tension member, a diagonal member having its ends secured to the top member and being then bent downwardly therefrom, struts interposed between said top and diagonal members, and a center bearing-plate carried by said bridge.

9. In a car-truck, thecombination with the side frames, of two bolsters or transoms supported by said side frames, and a bridge con necting said bolsters, said bridge comprising a top or compression member, a bottom or tension member and a diagonal member having its ends secured to the top bar, and having its middle portions separated therefrom,

cross pieces or bars interposed between said top and diagonal members and forming struts therefor, and a center bearing-plate supported on said cross-pieces.

10. In a car-truck, the combination with the side frames, of'twobolsters or transomssupported by said side frames, a bridge connecting sa'id bolsters consisting of a pair of top or compressionmembers, a pair of bottom bars or tension members, and a pair of diagonal members having their ends secured to the top members and their middle portionsseparated therefrom, a pair of cross pieces or bars inter- 6o" posed between said-compression, diagonal and tension members and forming struts therefor,-

and a center wbearing -plate supported on said cross-bars.

. 11'. In a car-truck, the combination with side frames, of two bolsters or transoms supported by said side frames, a bridge connecting-said bolsters comprising a pair of trusses supported on said bolsters, said trusses comprising tension diagonal and compression members,

struts for said trusses comprising'a pairof' spacing-pieces having their ends interposed between the tension and compression members, and having their upper surfaces depressed between the ends, and a center bearing-plate supported by said depressed portions. i

" 12. In a car-truck, the combination with side frames, of two bolsters or transoms supported by said side frames, atrussed bridge connectlng said bolsters, said bridge comprising a top or compression member, a diagonal member,

- said members having their ends secured to the top of the bolster and being separated between their ends, brackets secured to the lower side of the bolsters, and a tension member secured to said brackets and the depressed portion of the'diagonal member. I I

14. In a car-truck, the combination with the side frames, of two bolsters or transoms supported by said side frames, atrussed bridge connecting said bolsters, said bridge comprismember, said members having their ends socured to the top of the bolsters and separated between their ends, spacing-pleces interposed between said members and forming struts therefor, a center bearing-plate supportedby.

said spacing-pieces, and a tension member socured to the lower sides of the bolster and the depressed portion of the diagonal member.

In testimony whereof I, the said Anson) STUCKI, have hereunto set my hand.

. ARNOLD STUCKI.

\Vitnessesr G. CL RAYMOND,

Bonner LI. Torres.

ing a top or compression member, a diagonal I 

